Conduit.



Josnrn nonvor, or rnowns f s CGNDUIT.

pecication of Eetters Patent.

Patented Apr.. 2, wild..

ynpplieanniuaiJanneman,191e. semmaaia. v

To all 'whom z't may eo'ncems" Be it known that I, JOSEPH McEvoy, citizen of the United States, residing at Brownsville, Pa., in the county of Fayette, have invented certain new and useful Improvements in Conduits, of which the following is a full, clear, and exact description, such as will enableothers skilled in the art to which it appertains to make and use the same.

My invention relates to reinforced concrete and particularly to concrete conduits so constructed that the sections thereof can be quickly and conveniently secured together as desired. 1 p

The object of my invention is to provide a cheap, simple and eiicient form of steel reinforced concrete conduit which can be made air tight between the successive sections, and one which will not require any exact foundation to support the same.

'Another object of my invention is to rovide a concrete conduit the sections of w ich can be bolted or otherwise fastened together so as to form a complete metal reinforced unit.

My invention consists, generally stated, in the novel arrangement, construction and combination of parts as hereinafter more specifically set forth and described and partlcularly pointed out in the appended claim.

To enable others skilled in the art to which my invention appertains to construct, use and install myv improved conduit in a skilful and workmanlike manner, l will describe the same more fully referring to the accompanying drawing, 1n which:

gure 1 is a side view of a part of two sections of my improved conduit showing the method of connecting the same together.

Fig. 2 is an end view of one of the sections showing the fastening means.

Fig., 3 is a side view of a part of two abutting sections' of my improved conduit showing a different positlon of the connecting members. y

Fig. 4 is a longitudinal sectional view of another form of conduit showing the supports for the reinforcing bars.

Fig. 5 is a cross sectional view of the same on the line 6-6 of Fig. 5.

Like symbols of reference herein indicate like parts in each of the gures of the drawt is eoonly own among conduit and sewer construe that the orary terra cotta pipe' used in conduit and sewer construction is defective in that there is no permanent coupling arrangement'I between the successive sections, thus, a perfect foundation must be had or built or the cement or other bond securing the sections will be broken and the air and water tight connection thus fractured. Leaking sewers are the result and the escape of sewer gas endangers the health of persons in the near vicinity.

As illustrated in the drawing and 'particularly in Figs. 1 and 2 my improved conduit is formed of concrete and while the -form shown in said figures is circular in shape I do not limit myself to that particular sha e, as square, oblong, channel, or any other ape may be constructed under the principles of my invention.

The walls of the. conduit 1 are provided with a series of metal reinforcing bars 2 which extend from end to end of saidconduit and said bars are located at suitable intervals throughout the circumference Aof said conduit as is found best suited for the conditions existing where such conduitI is to be used.

At suitable equi-distant points throughout the circumference or periphery of the conduit l the ends of the reinforcing rods 2 are bent outward at right angles to their length as at 3, and the end is twisted around to form an eyelet 4 for a bolt 5 as later explained.

When' the vsections are placed together as -shown in Fig. 1 the bolt 5 is passed through the eyelets 4 on the two conduits 1 and a nut 6 is tightened onto said bolt in orderto firmly secure said sections together. If desired, the ends of the conduits l may be provided with a coating of plastic cement before placing the same together in order that when secured together by the bolts 5 the joint will be perfectly air and water tight, so that no sewage or gases can escape.

The bolts 5 andnuts 6 together with the rod ends 3 and eyelets l may be covered with cement to prevent any rusting or corroding of the same, while if it is ever Ydesired to uncouple the sections this cement can be readilyI chipped away or dissolved.

Fig. 3- shows the ends 3 of the rods 2 y With this method of securing the sections together and with the use of the coating of cement between the respective ends or joints of the sections there is very little danger that there would ever be any break in the joint or the escape of any fluid or gas.

If desired suitable lock washers 7 may be used for preventing the nuts 6 from turning, but this will not be necessary where the exposed metal parts are covered with cement.

- Figs. 4 and 5 illustrate another modification Where a tie plate 11 is embedded in the walls of the concrete conduit 1, and such plate is provided with a series of holes 12 through which the ends of the reinforcing bars 2 extend. The ends of these reinforcing Joars 2 which are used for securing the sections together are not interfered wit by the use of this plate as they pass through the same and sufficient space is allowed for them to be turned outwardly at right angles to their length or for a fastening plate to be secured thereto.

This construction shown in Figs. 4 and 5, has many advantages. The plate 11 keeps the whole stiff and prevents end cracks from spreading. Any chipped end parts may be easily replaced. The projecting ends of the rods 2 may be bent, giving the pipe exibility in laying.

The reinforcing bars 2 may be of any shape such as round or square and the spacing will depend upon the size of the conduit and the class of work for which it is intended.

Itwill readily be seen that with the use of my improved conduit there will be no necessity for a perfect foundation upon which to lay the same as the securely fitting joints cannot be pulled apart and separated,

as is the case in a conduitl where the sections are merely cemented.

It will also be apparent that my improved conduit can be made in any shape and size varying from its use as a sewer to large tunnel sections. If it is desired several of vantages.

. menare -rate sections to ether vmakes it impossible for the joints to ecome forced. When used in this capacity there wouldbe no leakage or escaped sewer gas to endanger the health of residents in the vicinity.

Various experiments and tests have proven my improved conduit to be o f inestimable value under hard working conditions and while I have described my invention as covering but one general type of conduit construction, various modifications and changes inthe design, construction, application and use of the same may be resorted to without departin from the spirit of the invention or sacr' cing any of its ad- What I claim as my invention and desire to secure by Letters Patent is:

In a concrete conduit, longitudinally extending reinforcing means, said means extending beyond the ends of the pipe and bent outwardly at right angles, the pipe having on its end outwardly opening recesses whereinto the said outturned ends fit, said extending ends being bendable, and devices whereby successive sections of ipe may be secured together by said out ent means, said means being bendable to adjustment to adapt aline of pipe to conform with an irregular trench or surface.

In testimony whereof, I have hereunto set my hand.

JOSEPH MCEVOY. Witnesses:

T. B. HUA/remixes, JosErHrNr. MAcGmvmr. 

